(19)
(11) EP 3 724 865 A1

(12)

(43) Date of publication:
21.10.2020 Bulletin 2020/43

(21) Application number: 17934959.2

(22) Date of filing: 12.12.2017
(51) International Patent Classification (IPC): 
G08B 21/24(2006.01)
H04W 88/04(2009.01)
H04W 84/18(2009.01)
 H04W 4/02(2018.01)
H04W 4/10(2009.01)
(86) International application number:
PCT/SE2017/051254
(87) International publication number:
WO 2019/117766 (20.06.2019 Gazette 2019/25)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA MD TN

(71) Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
164 83 Stockholm (SE)

(72) Inventors:
  • ARNGREN, Tommy
    954 42 Södra Sunderbyn (SE)
  • WÄNSTEDT, Stefan
    972 51 LULEÅ (SE)
  • JÖNSSON, Tomas
    975 98 LULEÅ (SE)
  • ÖKVIST, Peter
    973 41 LULEÅ (SE)

(74) Representative: Zacco Sweden AB 
P.O. Box 5581
114 85 Stockholm
114 85 Stockholm (SE)

   


(54) FIRST COMMUNICATION DEVICE, THIRD COMMUNICATION DEVICE, AND METHODS PERFORMED THEREBY TO MONITOR A SECOND COMMUNICATION DEVICE COMPRISED IN A GROUP OF COMMUNICATION DEVICES